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Brilliant_brown [7]
2 years ago
9

What evidence did Mendeleev use to decide that the alkali metals should be in the same group?

Chemistry
1 answer:
Bezzdna [24]2 years ago
4 0

Answer:

they all reacted the same

Explanation:

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Answer:a) organic

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Please help me with this it’s a quiz :(
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Carbon dixoide and water combine to form glucose and oxgen.

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Explanation:

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Briefly explain why there is a constant temperature plateau in the cooling curve
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5 0
1 year ago
How many moles of magnesium chloride can be formed from 4.86 g of Mg and 21.27 g of Cl2?
Hoochie [10]

Answer:

Moles of magnesium chloride can be produced are 0.2 moles

Explanation:

The reaction of Mg with Cl2 is:

Mg + Cl₂ → MgCl₂

<em>Where 1 mole of Mg reacts per mole of Cl₂ to produce MgCl₂.</em>

<em />

As the reaction is 1:1, we need to convert the mass of both Mg and Cl₂ to moles. The lower number of moles will determine the moles of MgCl₂ that will be produced:

<em>Moles Mg -Molar mass: 24.3g/mol-:</em>

4.86g * (1mol / 24.3g) = 0.2 moles Mg

<em>Moles Cl₂ -Molar mass: 24.3g/mol-:</em>

21.27g * (1mol / 70.9g) = 0.3 moles Cl₂

As moles of Mg < moles of Cl₂, Mg is limiting reactant and moles of magnesium chloride can be produced are 0.2 moles

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